The Function of a Mordant in Staining Procedures is To

Question

The function of a mordant in staining procedures is to
A) fix the specimen to the slide.
B) provide contrasting color.
C) decrease the solubility of dye molecules.
D) remove dye from certain structures.
E) damage cellular structures so they take up dyes better.

Accepted Answer

A mordant is a substance that is added to a staining solution to help the dye adhere to the specimen. Mordants work by forming a complex with the dye molecule, which makes it less soluble in the staining solution and more likely to bind to the specimen. This results in a more stable and intense coloration of the specimen. Therefore, the correct answer is C - the function of a mordant in staining procedures is to decrease the solubility of dye molecules.